Search

Charged-particle motion is studied in the self-electric and self-magnetic fields of a well-matched, intense charged-particle beam and an applied periodic solenoidal magnetic focusing field. The beam is assumed to be in a state of adiabatic thermal equilibrium. The phase space is analyzed and compared with that of the well-known Kapchinskij-Vladimirskij (KV)-type beam equilibrium. It is found that the widths of nonlinear resonances in the adiabatic thermal beam equilibrium are narrower than those in the KV-type beam equilibrium. Numerical evidence is presented, indicating almost complete elimination of chaotic particle motion in the adiabatic thermal beam equilibrium. [ABSTRACT FROM AUTHOR]

The Rate-Controlled Constrained-Equilibrium (RCCE) method for simplifying the treatment of reactions in complex systems is summarized and the selection of constraints for both close-to and far-from equilibrium systems is discussed. Illustrative examples of RCCE calculations of carbon monoxide concentrations in the exhaust products of an internal combustion engine and ignition delays for methane-oxygen mixtures in a constant volume adiabatic chamber are given and compared with “detailed” calculations. The advantages of RCCE calculations over “detailed” calculations are discussed. [ABSTRACT FROM AUTHOR]

Electric power was obtained using the super-adiabatic combustion TPV power generation system. In the system, a porous emitter made of alumina (Ceramic Foam) is installed at the middle. At both sides of the emitter, porous quartz glass plates with many pores are set up. A mixture of air and methane is introduced into the porous media, and flows uniformly across the cross section, where the flow direction changes regularly. Combustion occurs around the surface of the porous emitter. Through energy recirculation, the temperature of the emitter reaches about 1500K under the condition of the equivalence ratio of 0.2. Furthermore, the long-wavelength components of the radiation emitted from the porous emitter are partially absorbed by the porous quartz glass, then, the short wavelength components are introduced into the TPV cell. Though the view factor was very small and there was multiple-surface reflection by the quartz glass, we obtained the output power, which was small, using the super-adiabatic combustion TPV system. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]